. >> rose: we begin this evening in washington, today marks the 100th day of president obama's second term in office, this morning he held a conference at the white house and explained his stance on the use of chemicals weapons in syria. >> what we now have is evidence that chemical weapons have been used inside of syria, but we don't know how they were used, when they were used, who used them, we don't have a chain of custody that establishes what exactly happened, and when i am making decisions about america's national security and the potential for taking additional action in response to chemical weapon use, i have got to make sure i have got the facts. >> rose: and he condemned congress for stalling efforts to close guantanamo bay. >> i have asked my team to review everything that is currently being done in guantanamo, everything that we can do administratively and i am going to reengage in congress to try and make the case that this is not something that is in the best interests of the american people. the idea that we would still maintain forever a group of individuals who have